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<p>[QUOTE=&quot;NOS, post: 1365725, member: 2098&quot;]Cleaning coins is generally seen as taboo but there are exceptions. Metal detector coins and coins found in the ocean will often need some kind of cleaning done. Some coins are just simply dirty. I remember about ten years ago I had an Australian penny from the 1940s that looked ok enough but I decided to hook it up to an electrolysis set. The results were amazing, the coin came out looking much better and revealed toning and mint lustre that had probably been covered for decades. That is not to say that electrolysis is perfect by any means, you have to be very careful as it can eat away at the metal of coins when the current and solution used is too strong.[/QUOTE]</p><p><br /></p>

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